perf scripts python: exported-sql-viewer.py: Factor out ReportVars

Factor out ReportVars to provide a single container for information from
report dialogs.

Signed-off-by: Adrian Hunter <adrian.hunt

perf scripts python: exported-sql-viewer.py: Factor out ReportVars

Factor out ReportVars to provide a single container for information from
report dialogs.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf scripts python: exported-sql-viewer.py: Factor out ReportDialogBase

Factor out ReportDialogBase so it can be re-used.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <jols

perf scripts python: exported-sql-viewer.py: Factor out ReportDialogBase

Factor out ReportDialogBase so it can be re-used.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf scripts python: exported-sql-viewer.py: Move column headers

Move column headers from SQLAutoTableModel into SQLTableModel so that
they can be used for other models based on SQLTableModel.

Sign

perf scripts python: exported-sql-viewer.py: Move column headers

Move column headers from SQLAutoTableModel into SQLTableModel so that
they can be used for other models based on SQLTableModel.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf scripts python: exported-sql-viewer.py: Hide Call Graph option if no calls table

The Call Graph depends on the calls table which is optional when exporting
data, so hide the Call Graph option i

perf scripts python: exported-sql-viewer.py: Hide Call Graph option if no calls table

The Call Graph depends on the calls table which is optional when exporting
data, so hide the Call Graph option if there is no calls table.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf scripts python: exported-sql-viewer.py: Remove leftover debugging prints

Remove leftover debugging prints.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]

perf scripts python: exported-sql-viewer.py: Remove leftover debugging prints

Remove leftover debugging prints.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf scripts python: exported-sql-viewer.py: Fix missing shebang

exported-sql-viewer.py is a standalone python script and requires a
shebang. Also only python2 is supported at present. Restore the s

perf scripts python: exported-sql-viewer.py: Fix missing shebang

exported-sql-viewer.py is a standalone python script and requires a
shebang. Also only python2 is supported at present. Restore the shebang
but use the more flexible 'env' form.

Signed-off-by: Adrian Hunter <[email protected]>
Cc: Jiri Olsa <[email protected]>
Cc: [email protected]
Fixes: a38352de4495 ("perf script python: Remove explicit shebang from Python script")
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf tools: Rename build libperf to perf

Rename build libperf to perf, because it's used to build perf.

The libperf build object name will be used for libperf library.

Signed-off-by: Jiri Olsa <jo

perf tools: Rename build libperf to perf

Rename build libperf to perf, because it's used to build perf.

The libperf build object name will be used for libperf library.

Signed-off-by: Jiri Olsa <[email protected]>
Cc: Alexander Shishkin <[email protected]>
Cc: Namhyung Kim <[email protected]>
Cc: Peter Zijlstra <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf thread-stack: Represent jmps to the start of a different symbol

The compiler might optimize a call/ret combination by making it a jmp.
However the thread-stack does not presently cater for that

perf thread-stack: Represent jmps to the start of a different symbol

The compiler might optimize a call/ret combination by making it a jmp.
However the thread-stack does not presently cater for that, so that such
control flow is not visible in the call graph. Make it visible by
recording on the stack a branch to the start of a different symbol.
Note, that means when a ret pops the stack, all jmps must be popped off
first.

Example:

$ cat jmp-to-fn.c
__attribute__((noinline)) int bar(void)
{
return -1;
}

__attribute__((noinline)) int foo(void)
{
return bar() + 1;
}

int main()
{
return foo();
}
$ gcc -ggdb3 -Wall -Wextra -O2 -o jmp-to-fn jmp-to-fn.c
$ objdump -d jmp-to-fn
<SNIP>
0000000000001040 <main>:
1040: 31 c0 xor %eax,%eax
1042: e9 09 01 00 00 jmpq 1150 <foo>
<SNIP>
0000000000001140 <bar>:
1140: b8 ff ff ff ff mov $0xffffffff,%eax
1145: c3 retq
<SNIP>
0000000000001150 <foo>:
1150: 31 c0 xor %eax,%eax
1152: e8 e9 ff ff ff callq 1140 <bar>
1157: 83 c0 01 add $0x1,%eax
115a: c3 retq
<SNIP>
$ perf record -o jmp-to-fn.perf.data -e intel_pt/cyc/u ./jmp-to-fn
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0,017 MB jmp-to-fn.perf.data ]
$ perf script -i jmp-to-fn.perf.data --itrace=be -s ~/libexec/perf-core/scripts/python/export-to-sqlite.py jmp-to-fn.db branches calls
2019-01-08 13:24:58.783069 Creating database...
2019-01-08 13:24:58.794650 Writing records...
2019-01-08 13:24:59.008050 Adding indexes
2019-01-08 13:24:59.015802 Done
$ ~/libexec/perf-core/scripts/python/exported-sql-viewer.py jmp-to-fn.db

Before:

main
-> bar

After:

main
-> foo
-> bar

Committer testing:

Install the python2-pyside package, then select these menu options
on the GUI:

"Reports"
"Context sensitive callgraphs"

Then go on expanding the symbols, to get, full picture when doing this
on a fedora:29 with gcc version 8.2.1 20181215 (Red Hat 8.2.1-6) (GCC):

jmp-to-fn
PID:TID
_start (ld-2.28.so)
__libc_start_main
main
foo
bar

To verify that indeed, this fixes the problem.

Signed-off-by: Adrian Hunter <[email protected]>
Tested-by: Arnaldo Carvalho de Melo <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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perf script python: Remove explicit shebang from Python scripts

The scripts in scripts/python are intended to be run from 'perf script'
and the Python version used is dictated by how perf was built

perf script python: Remove explicit shebang from Python scripts

The scripts in scripts/python are intended to be run from 'perf script'
and the Python version used is dictated by how perf was built (PYTHON=).

Also most distros follow pep-0394 which recommends that /usr/bin/python
refer to Python2 and so may not exist on the system (if PYTHON=python3).

- Remove the explicit shebang
- Install the scripts as mode 644

Signed-off-by: Tony Jones <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Cc: Adrian Hunter <[email protected]>
Cc: Frederic Weisbecker <[email protected]>
Cc: Jonathan Corbet <[email protected]>
Cc: Ravi Bangoria <[email protected]>
Cc: Seeteena Thoufeek <[email protected]>
Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>

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